If you have fuses with Blue/white (Main) and Blue/red (Dip) thats a odd loom you have Cal, so if you take the fuses out do the headlight Dip/Main still work ? I've not seen one nor do any of the factory wiring manuals per year show those fuses. Odd indeed, I'm not doubting you but how they got these is a mystery.I'm interested to see what happens to the headlights if you take the fuses out? You should not really have 1 fuse controlling 2 lights, and a secondary note if they do indeed control the lights is the wire the same gauge? if so you have double the amps on the small gauge wire, what size fuse is in the holders.
When you take the fuses out do the connectors look factory crimped or soldered ?
Wonder if earlier in life they were fitted by a previous owner as the feeds for a fog/driving light relays?
The original 4 glass type inline fuses fitted in the location mentioned are factory style, on both looms too.
Both looms were fitted with 15amp glass fuses. If I remove a fuse either the dip or main will not work. I will update the thread with a couple pictures :)